Meson masses and decay constants from unquenched lattice QCD

Abstract

We report results for the masses of the flavour non-singlet light 0++, 1--, and 1+- mesons from unquenched lattice QCD at two lattice spacings. The twisted mass formalism was used with two flavours of sea quarks. For the 0++ and 1+- mesons we look for the effect of decays on the mass dependence. For the light vector mesons we study the chiral extrapolations of the mass. We report results for the leptonic and transverse decay constants of the rho meson. We test the mass dependence of the KRSF relations.

35 pages, 14 figures. Added 2 references. Fixed small typos

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Cited by in corpus (48)

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• Light Meson Physics from Maximally Twisted Mass Lattice QCD
• $\rho$ Meson Decay in 2+1 Flavor Lattice QCD
• Strongly interacting dynamics and the search for new physics at the LHC
• Meson and baryon spectrum for QCD with two light dynamical quarks
• Constraints on scalar leptoquarks from lepton and kaon physics
• Exclusive Radiative Higgs Decays as Probes of Light-Quark Yukawa Couplings
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• Quasi-two-body decays $B\to K\rho \to K\pi \pi$ in perturbative QCD approach
• Sp(4) gauge theories on the lattice: $N_f=2$ dynamical fundamental fermions
• Parton distribution amplitudes of light vector mesons
• Hadronic molecules in B decays
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• Exclusive radiative B-meson decays within the aligned two-Higgs-doublet model
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• Diffractive $\rho$ and $\varphi$ production at HERA using an AdS/QCD holographic light-front meson wavefunction
• Nucleon matrix elements of the antisymmetric quark tensor
• Decay constants of pseudoscalar and vector mesons with improved holographic wavefunction
• The equation of state of quark-gluon matter from lattice QCD with two flavors of twisted-mass Wilson fermions
• The quasi-two-body decays $B_{(s)}\to (D_{(s)},{\bar{D}}_{(s)})\rho \to (D_{(s)},{\bar{D}}_{(s)})\pi \pi$ in the perturbative QCD factorization approach
• Repurposing lattice QCD results for composite phenomenology
• Charmed and $\varphi$ meson decay constants from 2+1-flavor lattice QCD
• Revisiting the b1 pi and rho pi decay modes of the 1-+ light hybrid state with light-cone QCD sum rules
• Completing the framework of AdS/QCD: h_1/b_1 mesons and excited omega/rho's
• The $\rho (1S,2S)$, $\psi (1S,2S)$, ${\rm Y}(1S,2S)$ and ${\psi }_t(1S,2S)$ mesons in a double pole QCD Sum Rule
• Defect controlled vortex generation in current-carrying narrow superconducting strips
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• Anatomy of the $\rho$ resonance from lattice QCD at the physical point
• Purely leptonic decays of the ground charged vector mesons
• Contributions of the kaon pair from $\rho (770)$ for the three-body decays $B\to DK\bar{K}$
• Decay properties of the $Z_c(3900)$ through the Fierz rearrangement
• A lattice QCD calculation of the transverse decay constant of the b1(1235) meson
• The spin alignment of vector mesons with light front quarks
• Decay properties of the $X(3872)$ through the Fierz rearrangement
• Light Hadron Masses from a Matrix Model for QCD
• Re-examination of the rare decay $B_s\to \varphi {\mu }^{+}{\mu }^{-}$ using holographic light-front QCD
• Chiral corrections to the f_V^T/f_V ratio for vector mesons
• Investigating photoproduction of scalar mesons at medium energies
• K* vector and tensor couplings from Nf = 2 tmQCD
• Nucleon form factors with Nf=2 dynamical twisted mass fermions
• Excited hadrons in n_f=2 QCD
• Review of Neutral Naturalness